Seasons…
Tuesday, October 7th, 2014In the spirit of last Tuesday’s post on global warming and greenhouse gases and the current changing of the seasons (something affecting both hemispheres, mind you), I thought I’d write about a few things we human beings take for granted about Gaia. One thing is the tilt of the planet’s axis. Gaia’s is optimal. It’s the Goldilocks Principle all over again: too little tilt and the equatorial zones could become too hot, with maybe sweltering jungles or dry deserts; too much tilt and the winters everywhere could become too harsh, perhaps making the planet like that Ice Planet in Star Wars (probably without the white apes, because they wouldn’t have anything to eat).
We often complain about the seasons. My friendsl have likely heard me say, “Gee, I wish it was between 65 and 75 and sunny all year around.” I’d qualify this by recognizing the need for rain, but raining only at night would be nice, wouldn’t it? Medellin, Colombia falls into that temperature range most of the time, but temperature in Colombia is a strong function of altitude, which means other parts of the country can be sweltering. That’s one way to avoid some effects of no axis tilt—just throw some high mountains into the mix. But high altitudes can cause problems. People have nosebleeds even in Denver. Elderly Bogotanos (residents of Colombia’s capital) are often advised to retire to lower altitudes if they can, especially if they have cardiac problems. Equatorial countries experience many of the effects that an E-type planet with little or no axis tilt might have.